CAA CAA Regional & Neuraxial Anesthesia

Question 1

At which vertebral interspace is spinal anesthesia most commonly performed in adults to avoid injury to the spinal cord?

Accepted Answer

L2–L3 or L3–L4

Answer

T10–T11

Answer

T12–L1

Answer

L5–S1

Question 2

Which baricity of local anesthetic is used for spinal anesthesia when the patient is placed in the sitting position for a 'saddle block'?

Accepted Answer

Hyperbaric

Answer

Isobaric

Answer

Hypobaric

Answer

Isotonic

Question 3

Post-dural puncture headache (PDPH) is caused by:

Accepted Answer

Leakage of CSF through the dural puncture site, causing intracranial hypotension

Answer

Systemic absorption of local anesthetic

Answer

Vasovagal reaction to needle insertion

Answer

Epidural hematoma compressing the dura

Question 4

The DEFINITIVE treatment for a severe post-dural puncture headache is:

Accepted Answer

Epidural blood patch

Answer

IV caffeine infusion

Answer

Oral hydration and bed rest

Answer

NSAID therapy

Question 5

Total spinal anesthesia is a life-threatening complication characterized by:

Accepted Answer

High cephalad spread of intrathecal drug causing apnea, hypotension, and unconsciousness

Answer

Unilateral sensory loss and leg weakness only

Answer

Localized low back pain and urinary retention

Answer

Prolonged motor block without hemodynamic changes

Question 6

Which patient position during a spinal anesthetic MOST effectively limits cephalad spread of a hyperbaric local anesthetic solution?

Accepted Answer

Reverse Trendelenburg (head-up)

Answer

Trendelenburg (head-down)

Answer

Left lateral decubitus

Answer

Prone jackknife